Massive

adjective

1. forming or consisting of a large mass:
2. imposing in excellence or grandeur
3. having mass (see mass entry 2 sense 1c)
4. bulky
5. weighty, heavy
6. impressively large or ponderous
7. having no regular form but not necessarily lacking crystalline structure
8. large, solid, or heavy in structure
9. large in scope or degree
10. large in comparison to what is typical
11. being extensive and severe